Sand-feeder.



No. 827,450. A PATENTED JULY 31, 1906.

C. ILKKNAPP d: V. MULHOLLAND. SAND FEEDER.

APPLIOATIOR FILED y8E1".l".19, 1903. v

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Jur: Nouns rx-'rrlls co., wAsnlnaron, D. c.

PATENTED JULY 31, 1906.

C. B... KNAPP 6L VEMULHOLLAND.

SAND EEEDEE.

APPLICATION FILED SEPT. 19.1903.

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A V2.5@ Mm@ f1/ZA; WW2@ clairnedg'f L L 1 `Toenable othersskilledin the art tomake PATENT l E Nn vEiiGiL-QMuLHoLLND, orf PITTSBURG, rainn-v -f-sif--LvAi\IrA, AssiG'NoRs To, HEYLHAND PATTERSON, -oFPirrsBUna-, l

1 rENNsYLvANrA,A-.oorAnrnEnsn-ir.,

Be it known thatwe'pCHAnLEs KNrr andVERGInMUi-HoLLANn, residents of Pitts-1v l v'burg',finjthefjcounty of Allegheny and State ofl Pennsylvaniafhave invented a .new and usey ful Improvement inlSandeFeeders land we do hereby ',declarethe'following tofbea full, v clear,andiexactdescription thereof. O ur'invention'v relates toa device forfeed-V ing sand.y or like material, such as may be employe'd in Vconne'ction-,withfoundry plants for A* feedingthesandltothe mold.

' `r. f The object ofourinventi nisfto providea` L simple form of 'device'by means of which the L ksand introducedatheret'o is vproperly disinte- ,flgrated and distributed'Within themold withoutthe1ernployment ofrnanual labor. 4 i

" Tothese endsour `invention comprisesthe novel features. hereinafter* set forth and y and yuse 'our invention`,*`w`e willdescribe the f K, ysame more fully,'referring to theaccompany- .a Y proved sand-feeder, illustrated iink connectionv 'with the lforrnation'frmolds for Gini-wheelsy 'jf V*Figure 11 ,is a fsectional'elevation of our im-` Fig. 2isfa-,plan `view,and'ligQ 3 is adetal view ofthe manner thejverti'calshaft.JA y L'ke ,numerals yindicate like parts vin-each oftheii res..v l f Y In the-drawings theynurneral 2` designates a box or receptacle of; suitable dimensions,

saidboX being,providedz with the hopper 3, suitably secured yat the upper e'ndthereofforl `the `dischar ing ofthe sandinto ythe boX. f `Bolted or ot erwise secured to the outerwall *of the .box` Zfis' the circular Vframe L1,.'saidv yframe lhavinv l'the arms-orbrackets `5 lat suitable intervas thereon'. MountedV upon the shafts 6y in' said brackets, 5v are the rollers .7.

i One ofthe brackets''hasthejshaft 8 jour;

' naled therein,y saidshafthavng the pulley 9 thereon, adaptedtobe drivenby any suitd i' v"Sipecfication of 'Letters Patent.,- J Appligartidnzxlad.September 19,l

ofV securing thefsweep to n fsefin-Naiizaszs.

vingto support vthe rotary frame.

Secured to the'bfottom of the yrotary frame 13 isithe screenll, said Vscreen being .made upv formfthe proper mesh,-and the sizeof the terfthereofin yorder yto provide for theproper in ther rotation of the vfrarnel the outer ortion thereof will `moveor travel throug a greater distance than ythe inner central portion', and @accordingly the .sand will work fscreent'oprovide for the evendischarge or feedingvof theV sand..

bearing 16, are secured to the rotary frame 13,

with the screw l20 passind'through the parts `molding-machine table 23. We have illus-l trated'our invention'in lconnection with the forming of molds forear-wheels, and the flask ,farms bein 'secured to the lugs 26v on 'the in- 'ner face o said'boX.

lowfor theadjustment of these radial arms., Mounted Within suitable bearings129 in they framel isthe idle roller 30, ad'aptedto entary frame 13., v '.Whenfourinvention is in use, the sandfis fedin'to the. hopper 3 and descends into the boX"`2. Power is applied to shaft 8, wheretion'isimpartedtofthe ame 13. As this fframezrotatesflthe screen. 141y rotates with it,

distribution of the sand. vItis apparent that 1210i said bearing and y adapted to secure the sweep totheshaft 17. Below-the sweep 18l land 1in kproper `position to be swept thereby isl the flask 22, supported upon the suitable'k illustrated is one suitableffor that purpose.l

Within the boX 2A are the radialv arms 24, securedtogether atthe centralportion of the Y Abox y'byjtherivets 25, theouter ends of said ,90V 4 p rThe arms arek securedz l to said lugsjby-means of vthe bolts 27 fitting i in the slotted openings 28 infsaid lugs to al n upon throughthe bevel-gpar 10 rotary n10-f ratentedmiy'sl,1906., r ,l

-lange 12 beyond the rackll, said rollers a'ct-k of Wire vor other suitable material: adapted; to f rmeshgof said screenincreasestoward the cen' .f if i 6o Radialarms 15, having-a common central and withinthis common bearing'l'is se, "7l" cured thejverticalshaft 17. Secured to the' v1 lower end of the vertical shaft 17 is `thesweep` K, g 18,said sweep having the split bearing 19,

gage theupper face of the flange 12of-the rof i IOO 65 through the outer meshes ofthe screen more rapidly than through the meshes at the central portion of the screen. Accordingly the size of `n .the mesh increasesl toward the center of the` and the sand sifts through said screen and drops into the mold below. As stated above7 Accordingly an even feeding of the sand to the mold below is obtained, so that practically the same amount is discharged from all parts of the screen to the mold. The radial arms 24 moving in close relation to the screen act to stir up the sand and feed it properly through the screen. AS the `sweep 18 also rotates with the frame 18 it moves over the top of the mold and distributes the sand properly and when the mold is filled will slick off the top, so as to make it smooth and even.

By our invention'the sand fed to the machine is properly broken up or disintegrated and distributed in the mold, while at the same time the sweep evens olf the mold, and the entire operation is done without the use of manual labor, thereby not only increasing the output, but reducing greatly the cost of labor.

What we claim is- A rotary screen having meshes increasing in size from the outer portion to the center thereof, and means for operating said Screen.

In testimony whereof we, the said CHARLES R. KNAPP and VERGIL MULHOLLAND, have hereunto set our hands.

CHARLES R. KNAPP. VERGIL MULHOLLAND.

Witnesses:

ROBERT C. TorTnN, F. W. WINTER. 

